/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package co.elastic.apm.agent.configuration;

import co.elastic.apm.agent.impl.ElasticApmTracer;
import co.elastic.apm.agent.impl.GlobalTracer;
import co.elastic.apm.agent.impl.Tracer;
import org.stagemonitor.configuration.ConfigurationOptionProvider;
import org.stagemonitor.configuration.ConfigurationRegistry;

import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ServiceLoader;

import static co.elastic.apm.agent.configuration.ConfigurationExporterTest.renderDocumentation;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class ConfigurationExporter {

    public static void main(String[] args) throws Exception {
        ElasticApmTracer tracer = mock(ElasticApmTracer.class);
        when(tracer.getState()).thenReturn(Tracer.TracerState.UNINITIALIZED);
        GlobalTracer.init(tracer);
        try {
            ConfigurationRegistry configurationRegistry = ConfigurationRegistry.builder()
                .optionProviders(ServiceLoader.load(ConfigurationOptionProvider.class))
                .build();
            Path path = Paths.get("docs/configuration.asciidoc");
            if (!path.toFile().canWrite()) {
                throw new IllegalStateException(path + " does not exist");
            }
            Files.write(path, renderDocumentation(configurationRegistry).getBytes(StandardCharsets.UTF_8));
        } finally {
            GlobalTracer.setNoop();
        }
    }

}
